private async void btnWipe_Click(object sender, EventArgs e)
{
DiskDrive dd = (DiskDrive)lstDiskDrive.SelectedItem;
if (dd == null)
{
MessageBox.Show("Choose valid SD drive first.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (MessageBox.Show("All data on SD card will be erased and partitions deleted. Are you sure?", "Warning",
MessageBoxButtons.YesNo, MessageBoxIcon.Warning) == System.Windows.Forms.DialogResult.No)
{
return;
}
Operation = "Wiping";
if (!TryLockVolumes(dd))
{
return;
}
SetButtons(false);
using (Stream source = new ConstantStream(0xff), dest = dd.CreateStream(FileAccess.Write))
{
var mbr = Properties.Resources.MBR;
dest.Write(mbr, 0, mbr.Length);
progress.Value = 0;
progress.Maximum = (int)(((long)dd.GetDriveSize() - mbr.Length) / (1024 * 1024)) + 1;
cts = new CancellationTokenSource();
try
{
await CopyStreamAsync(source, dest, (long)dd.GetDriveSize() - mbr.Length, cts.Token, null);
}
catch (Exception ex)
{
if (!(ex is OperationCanceledException))
{
MessageBox.Show(ex.Message, "Exception", MessageBoxButtons.OK);
}
cts.Cancel();
}
}
dd.DismountVolumes();
dd.UnlockVolumes();
dd.MountVolumes();
ResetProgress();
FillDriveList();
if (!cts.IsCancellationRequested)
{
MessageBox.Show("Erasing complete.", "Complete", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
SetButtons(true);
cts = null;
}
private async void btnWrite_Click(object sender, EventArgs e)
{
DiskDrive dd = (DiskDrive)lstDiskDrive.SelectedItem;
if (!CheckFilename(txtFilename.Text, dd, false))
{
txtFilename.Focus();
return;
}
var filename = Path.GetFullPath(txtFilename.Text);
if (MessageBox.Show("All data on SD card will be erased and overwritten. Are you sure?", "Warning",
MessageBoxButtons.YesNo, MessageBoxIcon.Warning) == System.Windows.Forms.DialogResult.No)
{
return;
}
Operation = "Writing";
if (!TryLockVolumes(dd))
{
return;
}
SetButtons(false);
using (Stream source = new FileStream(txtFilename.Text, FileMode.Open, FileAccess.Read, FileShare.Read),
dest = dd.CreateStream(FileAccess.Write))
{
progress.Maximum = (int)(source.Length / (1024 * 1024)) + 1;
progress.Value = 0;
cts = new CancellationTokenSource();
try
{
await CopyStreamAsync(source, dest, source.Length, cts.Token, null);
}
catch (Exception ex)
{
if (!(ex is OperationCanceledException))
{
MessageBox.Show(ex.Message, "Exception", MessageBoxButtons.OK);
}
cts.Cancel();
}
}
dd.DismountVolumes();
dd.UnlockVolumes();
dd.MountVolumes();
FillDriveList();
if (!cts.IsCancellationRequested)
{
MessageBox.Show("Writing complete.", "Complete", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
ResetProgress();
cts = null;
}
private async void btnRead_Click(object sender, EventArgs e)
{
DiskDrive dd = (DiskDrive)lstDiskDrive.SelectedItem;
if (!CheckFilename(txtFilename.Text, dd, true))
{
txtFilename.Focus();
return;
}
var filename = Path.GetFullPath(txtFilename.Text);
Operation = "Reading";
if (!TryLockVolumes(dd))
{
return;
}
SetButtons(false);
using (Stream dest = new FileStream(txtFilename.Text, FileMode.Create, FileAccess.Write, FileShare.None),
source = dd.CreateStream(FileAccess.Read))
{
progress.Maximum = (int)(dd.GetDriveSize() / (1024 * 1024)) + 1;
progress.Value = 0;
cts = new CancellationTokenSource();
try
{
await CopyStreamAsync(source, dest, (long)dd.GetDriveSize(), cts.Token, null);
}
catch (Exception ex)
{
if (!(ex is OperationCanceledException))
{
MessageBox.Show(ex.Message, "Exception", MessageBoxButtons.OK);
}
cts.Cancel();
}
}
dd.UnlockVolumes();
if (!cts.IsCancellationRequested)
{
MessageBox.Show("Reading complete.", "Complete", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
ResetProgress();
SetButtons(true);
cts = null;
}